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<?php |
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namespace Benrowe\Laravel\Config\Storage; |
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/** |
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* File storage for config |
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* |
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* @package Benrowe\Laravel\Config\Storage |
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*/ |
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class File implements StorageInterface |
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{ |
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/** |
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* @var string path to the config file |
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*/ |
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protected $filename; |
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/** |
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* @var string The state of the file as an md5 checksum |
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* This is used to verify if the state of the file changed before it |
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* is written back |
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*/ |
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private $fileState; |
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/** |
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* constructor |
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* |
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* @param string $file the file to persist the data two |
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*/ |
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public function __construct($file) |
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{ |
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$this->filename = $file; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function save($key, $value) |
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{ |
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$data = $this->load(); |
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$data = $this->delKey($data, $key); |
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if (is_array($value)) { |
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// remove all previous keys first |
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foreach ($value as $i => $arrValue) { |
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$data[$key.'['.$i.']'] = $arrValue; |
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} |
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} else { |
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$data[$key] = $value; |
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} |
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$content = json_encode($data); |
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$this->fileState = md5($content); |
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file_put_contents($this->filename, $content); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function load() |
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{ |
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if (!file_exists($this->filename)) { |
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touch($this->filename); |
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} |
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$content = file_get_contents($this->filename); |
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$this->fileState = md5($content); |
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if (!empty($content)) { |
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return json_decode($content, true); |
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} |
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return []; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function clear() |
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{ |
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$clearState = '{}'; |
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file_put_contents($this->filename, $clearState); |
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$this->fileState = md5($clearState); |
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} |
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/** |
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* Remove the requested key from the data, reguardless if it's a single |
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* value or an array of values |
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* |
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* @param array $data [description] |
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* @param string $key the key to delete |
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* @return array |
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*/ |
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private function delKey(array $data, $key) |
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{ |
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$keys = array_keys($data); |
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foreach ($keys as $dataKey) { |
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if (strpos($dataKey, $key) === 0) { |
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unset($data[$dataKey]); |
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} |
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} |
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return $data; |
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} |
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} |
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